Stop losing revenue. Start speed. Shopify performance in 24 hours.
Every second your store takes to load costs you customers. We fix your Shopify speed in one day, so you start converting more from tomorrow.
Why your Shopify store is losing money right now
Most store owners don't realize how much revenue they leave on the table every single day. These are the hidden performance killers we find in almost every Shopify store:
Ghost code from old apps
Uninstalled apps leave behind JavaScript and Liquid snippets that keep running invisibly, slowing every page load.
LCP & CLS problems
Largest Contentful Paint and layout shifts directly hurt your Google rankings and frustrate mobile shoppers.
Theme bloat from years of edits
Patch after patch, your theme accumulates dead code, duplicate CSS, and outdated logic that drags performance down.
Render-blocking scripts
Third-party tracking pixels and analytics scripts block your page from rendering, adding seconds to every visit.
Too much JavaScript
Excessive client-side JS bundles force browsers to download, parse, and execute megabytes of unnecessary code.
Unoptimized media
Oversized images and videos without lazy loading, proper formats, or responsive sizing waste bandwidth and time.
Wrong app stack
Overlapping apps doing the same job, or poorly built apps with heavy footprints, compound every other speed issue.
What this costs you every day
The 1-Day Shopify Performance Fix
In just one day, our performance team transforms your Shopify store into a fast, conversion-driven machine.
Measurable results within days
What our clients say
"Zinzo addressed the legacy code affecting our shop's speed performance, while developing some new features. As a result, the performance score already doubled, with more improvements following soon."
Guido Evers
@TESTA-OMEGA3.COM
"The custom improvements to our webshop were done professionally, in close cooperation with our technical partner and delivered within 2 weeks. We immediately noticed the results in our analytics: in the first month we measured a 14% conversion rate increase from organic search and +81% increase on paid search."
Ronald Klijsen
@LOINTSOFHOLLAND.COM
"The core web vitals changed from 60 (fail) to +80 (pass) following the performance fix to one of our client's Magento webshop. Directly we saw the paid traffic conversions improve by almost 80%."
Akke Pennin
@IWB.AGENCY
Why Zinzo, not just any agency
We are not generalists. We are Shopify Performance Engineers.
Deep technical Shopify expertise
Our engineers work at the Liquid, theme architecture, and Shopify API level, not with plugins or surface-level fixes.
Performance + CRO combined
Speed alone is not enough. Our CRO Navigator provides data-driven insights so every performance gain translates to revenue.
Scalable capacity
Our nearshore dev hub gives us dedicated engineering capacity at competitive rates, without compromising on quality.
Built for complex stores
High-volume catalogs, multi-region setups, heavy integrations. We've optimized stores most agencies would avoid.
Not sure yet? Start with a Performance Scan.
A complete technical audit that tells you exactly why your Shopify store is slow, and what it's costing you.
Performance Scan
Free
- Core Web Vitals analysis
- Ghost code report
- App stack analysis
- Theme & Liquid code review
- Priority matrix
- 10-25 recommendations sorted by impact
How it works
Intake + baseline measurement
We analyze your current performance, run benchmarks, and identify the highest-impact fixes.
1-Day Fix: 8 hours of dedicated engineering
Our performance team executes all optimizations on your staging environment in a single focused sprint.
Before/after report + metrics
You receive a detailed comparison showing exactly what improved, by how much, and what to monitor going forward.
Transparent pricing, no surprises
Choose the option that fits your needs. Every investment pays for itself through better conversions.
Performance Scan
Know exactly what's wrong and what it costs you
- Core Web Vitals analysis
- Ghost code detection
- App stack review
- Theme & Liquid audit
- 10-25 prioritized recommendations
- Delivered within 2 business days
Frequently asked questions
Is one day really enough?
Yes. Our team of specialized performance engineers works in a focused 8-hour sprint on your staging environment. Because we've done this 100+ times, we know exactly where to look and what to fix. Most stores see dramatic improvements within this single session.
Does this work on any Shopify theme?
Yes. Whether you're running Dawn, a custom theme, or a heavily modified third-party theme, our engineers work at the Liquid and asset level. We optimize what's there rather than requiring a theme switch.
What if the results are not what we expected?
We always start with a baseline measurement and set clear expectations during intake. If we identify during the scan that your store requires more extensive work, we'll tell you upfront before you commit to the 1-Day Fix.
When will I see results?
Speed improvements are visible immediately after deployment. Conversion uplift typically becomes measurable within 5-7 days as enough traffic flows through the optimized experience.